Last Details: Developing Waterspout Over Diamond Valley Lake, Near Hemet In The Inland Empire; Storm Activity Diminishes Overnight


A funnel cloud developed over Diamond Valley Lake on Sunday near Hemet.  The Storm is moving out tonight.  What is next?  Read on more for details …

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I had a lot of messages about a funnel cloud picture today.  I went across all the radar images and did not see much rotation with the cell, however what was noticed is it only was over Diamond Valley Lake, near Hemet.  This was NOT a tornado.  It was formed from the warmer lake waters vs the colder low-level air at 2,000 FT above it.  This generally will produce waterspouts, similar to what you see off our coast.  These do not form with tornado dynamics and that cell was just over the right place to do it.  It is actually quite common so nothing new there.

As for the storm.  Yesterday I issued a weather advisory for the Kern County Valleys for today’s event.  You are seeing thunderstorms across that valley as I type this and thus this was a pinpoint forecast for you and the micro-climate alert system.  Remember, these advisories are issued ONLY on my micro-climate alert system, whether you pay for the email/android (soon IOS) alert system to get them 100% or get them via Facebook (not recommended as much), those alerts may go missed if you are not on either system so do not rely on these articles or the main SCWF FB page for all my forecasts.

I have issued a Winter Weather Advisory for the San Bernardino Mountains above 6,000 FT.  Snow levels are around 7,700 FT at the moment but they will drop through 6,500 this later afternoon and evening.  The back-side of an inside slider system will move through, lasting into some of tonight.  This will promote a northerly flow and thus the chance of a dusting to 2″ of snowfall across the Big Bear Lake forecast area.  This is a follow-up to the forecast calling for such last week for today/tonight.

Furthermore a Weather Advisory was issued here at SCWF for this evening into the overnight for the Las Vegas, Needles, and Blythe forecast zones.  An inside slider coming out of the northwest will drag an area of upper divergence and enough deep-layer moisture with instability for the risk of thunderstorm development.  The activity will move from Las Vegas, NV, southward through the Needles and Blythe areas.  Expected development and movement will be evening through tonight …

As for the rest of us in the metros.  We will expect this to move out overnight, leaving for a nice week ahead.  Between the 15th and New Years Eve we will have a pattern where we could get cold Santa Ana Winds AND (not or) cold storms into the area.  It will feel like Christmas at times so I’m not moving off that original December 2019 forecast for that.

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